Many people may not know or have never noticed that there are these tiny holes on airplane windows. I’m sure you will definitely notice them next time… and you may have to be like the author, who secretly put his hand on the hole to check if air can get in. คาสิโนออนไลน์ UFABET ฝากถอนรวดเร็ว เริ่มต้นเล่นง่าย Let’s learn more about the importance or function of this hole.
What’s the purpose of the small holes in airplane windows?
These small holes in the windows in the passenger compartment of the aircraft are called “Breather Holes” or “Bleed Holes”. And function to adjust the pressure between the passenger compartment and the pressure between the window panes and to release moisture between the three window panes.
To adjust the pressure level
“The purpose of the small hole in the center window is to equalise the pressure between the cabin and the window panes, leaving only the outer window exposed to the high pressure. If the outermost window fails to cope with the pressure (which is very unlikely). The center window will act as a depressuriser. A small amount of air may leak out through the breather hole. But this will not affect the pressurisation of the aircraft,” explains Marlowe Moncur, Technology Director at GKN Aerospace, a leading manufacturer of aircraft windows.
Dissipate moisture from the gaps between the window panels.
Another function of the Breather Hole is that it will help release moisture from the gaps between the three window panels, so that there is no condensation on our windows. But sometimes, there will be small ice crystals forming around this circular hole. Caused by the air in the passenger compartment coming into contact with the freezing window, because the outside air can be as low as -70 degrees Fahrenheit (about -56 degrees Celsius): Bret Jensen, Boeing’s aeronautical engineering specialist, said.
Components of an aircraft window
On the airplane window, there are three layers of clear acrylic sheets. The clear sheet next to us only serves as a barrier.
The other two plates, the center plate and the outer plate, have a more important function, which is to adjust the air pressure in the passenger compartment.
That is, when the plane takes off into the sky. The air pressure inside the passenger cabin is adjusted to a level that is comfortable and safe for the passengers. This makes the air pressure inside the passenger cabin much higher than outside. The two transparent windows are designed to be strong enough to withstand the pressure between the inside and outside. But in normal circumstances, only the outer window receives the resistance. Because there is a tiny round hole in the middle transparent window.